New York Registration

[airboat1]

Well since my last post I discovered the NYS DMV will require that I request a VIN before I can request the technical field inspection. The Florida title VIN is a Everett Morrison kit number which is unacceptable in NY. They did say they are going to register my EM as a 2005. To apply for a VIN I will need proof of purchase of all major parts, this is no problem since I have the builders receipts except for the engine which was built in a custom shop from parts. The DMV wants the shop's engine bill of sale and I must identify the engine block number, the engine builder said he can provide the proof of purchase but has no record of the engine number tag. I have looked all over the 351W engine using a bore scope, camera, mirror etc. I gone on line for info on number location but cannot find a number anywhere. I've looked everywhere with no luck unless it's behind a motor mount I'm stumped. Has anyone had trouble locating there number?
Steve

[Mark IV]

Depending upon the year of the block there may be no "engine number" as Ford did not VIN all engines until 1969.

What type/year block is it? We can provide help as where to look.